There are various sizes of paper in this market, from the popular such as A3, A4, F4, quarto, HVS. It does not matter whether the color is white or not, the actual paper size is generally divided from A, B, C, R, F and other types. Please see size below.SERIES A

* F4 / Folio = 21.0 x 33.0 cmUsually used for photocopiers and office. The most commonly used are F4 or people prefer to call Folio.There is also a paper size that is called by other names such as quarto or HVS ( I think, this is not the size of the paper,)